Consumers are being misled after research found one in five household products do not match their energy-efficiency claims, according to the Energy Standards Trust.
European Commission-funded research found that up to 20% of products - including ovens, fridges, washing machines and dishwashers - did not comply with energy-efficiency standards.
As a result, 10% of potential energy savings promised are missed by millions of products across Europe, the Trust said.
More top news
Big Ben will fall silent on Monday for renovations following a backlash from MPs over the proposed four-year timetable for the work.
Rain will push into the northwest, turning heavy and persistent in places
Thousands of dangerous appliances are still in use across the UK despite years of warnings about the dangers.